CY7C1021D-10VXIT Datasheet, PDF (1/16 Pages) Cypress Semiconductor – 1-Mbit (64 K × 16) Static RAM

CY7C1021D
1-Mbit (64 K × 16) Static RAM
1-Mbit (64 K × 16) Static RAM
Features
■ Temperature Ranges:
❐ Industrial: –40 °C to 85 °C
❐ Automotive-A: –40 °C to 85 °C
■ Pin and Function Compatible with CY7C1021B
■ High Speed
❐ t_AA = 10 ns
■ Low Active Power
❐ I_CC = 80 mA at 10 ns
■ Low CMOS Standby Power
❐ I_SB2 = 3 mA
■ 2.0 V Data Retention
■ Automatic Power Down when Deselected
■ CMOS for Optimum Speed and Power
■ Independent Control of Upper and Lower Bits
■ Available in Pb-free 44-pin 400-Mil Wide Molded SOJ and
44-pin TSOP II Packages
Functional Description
The CY7C1021D is a high performance CMOS static RAM
organized as 65,536 words by 16 bits. This device has an
automatic power down feature that significantly reduces power
consumption when deselected. The input and output pins (IO₀
through IO₁₅) are placed in a high impedance state when the
device is deselected (CE HIGH), outputs are disabled (OE
HIGH), BHE and BLE are disabled (BHE, BLE HIGH), or during
a write operation (CE LOW and WE LOW).
Write to the device by taking Chip Enable (CE) and Write Enable
(WE) inputs LOW. If Byte Low Enable (BLE) is LOW, then data
from I/O pins (IO₀ through IO₇), is written into the location
specified on the address pins (A₀ through A₁₅). If Byte High
Enable (BHE) is LOW, then data from I/O pins (IO₈ through IO₁₅)
is written into the location specified on the address pins (A₀
through A₁₅).
Read from the device by taking Chip Enable (CE) and Output
Enable (OE) LOW while forcing the Write Enable (WE) HIGH. If
Byte Low Enable (BLE) is LOW, then data from the memory
location specified by the address pins appears on IO₀ to IO₇. If
Byte High Enable (BHE) is LOW, then data from memory
appears on IO₈ to IO₁₅. See the Truth Table on page 10 for a
complete description of read and write modes.
Logic Block Diagram
DATA IN DRIVERS
A₇
A₆
A₅
A₄
A₃
64K x 16
RAM Array
A₂
A₁
A₀
COLUMN DECODER
IO₀–IO₇
IO₈–IO₁₅
BHE
WE
CE
OE
BLE
Cypress Semiconductor Corporation • 198 Champion Court
Document Number: 38-05462 Rev. *K
• San Jose, CA 95134-1709 • 408-943-2600
Revised March 6, 2012